# STANFORD BIKE TRAFFIC - PowerPoint PPT Presentation

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STANFORD BIKE TRAFFIC. Marisa Macias Janet Yu Xijia Chen. Goals of the Project. Make observations on daily Stanford traffic at specific times Express those observations using clear and creative visualizations

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STANFORD BIKE TRAFFIC

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STANFORD BIKE TRAFFIC

Marisa Macias

Janet Yu

Xijia Chen

Goals of the Project

• Make observations on daily Stanford traffic at specific times

• Express those observations using clear and creative visualizations

• Arrive at a conclusion about the safety of chosen locations on the Stanford campus throughout the day

• Most traffic occurs during given times between classes

• 10 min. before the hour (morning); 5-15 min. after the hour (afternoon)

• Traffic consistent throughout week

• Monday is the same as Tuesday, etc.

• Skateboarders, Rollerbladers, and Cars ignored

• Assumed that they constituted small percentage of traffic

Problems Encountered

• Limited time in which to accomplish project

• Human error

• Too many people

• Bicyclists doing U-turns

• Conditions not indicative of year-round traffic

• Weather sunny for all four days

Choice of Method

• Criteria:

• 3D --> 3D visualizations

• Creative and clear

• Possible Candidates:

• Scatter plots, line plots, density plots, bar graphs, pie charts

• Process of elimination

The Chosen Methods

• Parallel Plot Bar Graphs

• Color clearly differentiates type of traffic

• Independent variables: time vs. location

• Dependent variables: number of bicyclists, pedestrians, and helmets

• Density Plot

• Clearly see totals at one time

• Color also used to identify types of traffic

Conclusions

• Traffic generally decreases over time

• Higher percentage of helmets later in the day

• Tower and Gates had most traffic in one day

• Tower at 1:05 - 1:15 PM -- most bicyclists and pedestrians w/ small percentage of helmets

• Amount of helmets compared to bicyclists small